Bazel：如何 import/build a go_binary for a go_test

Question

我正在使用 bazel 运行在我的 CI 系统上进行 go 测试。 go 测试将需要使用从另一个 go 文件构建的辅助二进制文件。

目录结构如下所示：


    some/of/my/path
    ├── BUILD.bazel
    ├── my_utils.go
    ├── my_test.go
    └── my_tool
        ├── BUILD.bazel
        └── my_tool.go

即my_test.go 中的代码将使用从目录 my_tool.

构建的可执行二进制文件

在非 bazel 的情况下，我可以 go build ./mytool 获取 my_test.go 需要的可执行二进制文件。为了适应这个 bazel 世界，我在 bazel 文件中写了以下内容：

在some/of/my/path/BUILD.bazel中：


    load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
    
    go_library(
        name = "testutils",
        srcs = ["my_utils.go"],
        importpath = "some/of/my/path",
        visibility = ["//visibility:public"],
        deps = [
            "@org_golang_x_net//context",
            ... (some other dependencies, not related)
        ],
    )
    
    go_test(
        name = "my_test",
        size = "enormous",
        srcs = ["mytest.go"],
        embed = [":testutils"],
        deps = [
            "//some/of/my/path/my_tool:my_tool",
        ],
    )

在some/of/my/path/my_tool/BUILD.bazel


    load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
    
    go_library(
        name = "my_tool_lib",
        srcs = ["my_tool.go"],
        importpath = "some/of/my/path/my_tool",
        visibility = ["//visibility:private"],
        deps = ["some dependency"],
    )
    
    go_binary(
        name = "my_tool",
        embed = [":my_tool_lib"],
        visibility = ["//visibility:public"],
    )

所以我的想法是当我点击 bazel run 时，它将构建 my_tool go 二进制文件，go test my_test 可以使用它（参见 deps 字段围棋测试）。

在 CI 我遇到了这个错误：


    ERROR: /home/agent/work/.go/src/some/of/my/path/BUILD.bazel:20:8: in go_test rule //some/of/my/path:my_test:
    Traceback (most recent call last):
      File "/home/agent/.cache/bazel/_bazel_agent/40f5e2a2e18a7cdb4cd075f919d8072b/external/io_bazel_rules_go/go/private/rules/test.bzl", line 66, column 43, in _go_test_impl
        internal_source = go.library_to_source(go, ctx.attr, internal_library, ctx.coverage_instrumented())
      File "/home/agent/.cache/bazel/_bazel_agent/40f5e2a2e18a7cdb4cd075f919d8072b/external/io_bazel_rules_go/go/private/context.bzl", line 247, column 26, in _library_to_source
        _check_binary_dep(go, dep, "deps")
      File "/home/agent/.cache/bazel/_bazel_agent/40f5e2a2e18a7cdb4cd075f919d8072b/external/io_bazel_rules_go/go/private/context.bzl", line 295, column 13, in _check_binary_dep
        fail("rule {rule} depends on executable {dep} via {edge}. This is not safe for cross-compilation. Depend on go_library instead.".format(
    Error in fail: rule //some/of/my/path:my_test depends on executable //some/of/my/path/my_tool:my_tool via deps. This is not safe for cross-compilation. Depend on go_library instead.
    ERROR: Analysis of target '//some/of/my/path:my_test' failed; build aborted: Analysis of target '//some/of/my/path:my_test' failed
    INFO: Elapsed time: 79.552s
    INFO: 0 processes.
    FAILED: Build did NOT complete successfully (595 packages loaded, 12182 targets configured)
    ERROR: Build failed. Not running target
    FAILED: Build did NOT complete successfully (595 packages loaded, 12182 targets configured)
    Process exited with code 1

但我的目标是使用二进制文件。我应该如何更改配置以实现该目标？

Answer 1

你想要 data，而不是 deps。 deps 用于链接到二进制文件的内容，data 用于二进制文件在运行时使用的内容。

一旦您的二进制文件在 data 中，请使用 runfiles.go 到运行它。将 @io_bazel_rules_go//go/tools/bazel:go_default_library 添加到 deps（这是您要链接的库），然后使用 FindBinary 查找路径。

Bazel：如何 import/build a go_binary for a go_test

Bazel: how to import/build a go_binary for a go_test

go

bazel